Area Code 423-213 located in UNICOI, UNICOI, TN, more detail is as below. Place NPA (Numbering Plan Area) : 423 NXX (Local Number Prefix) : 213 City : UNICOI County : UNICOI State : TN (Tennessee) NXX Use Type : Wireless NXX Intro Version : 2002-05-01 FIPS (Federal Information Processing Standards) : 47171 LATA (Local Access Transport Area) : 956 Rate Center : ELIZABTHTN ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 37692 Other Information NPANXX : 423213 County Population : 0 Switch CLLI (Common Language Location Identifier) : JHCYTNDJCM0 MSA CBSA (Core Based Statistical Area) : Johnson City, TN MSA CBSA Code (Core Based Statistical Area) : 27740 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : SPRINT SPECTRUM L.P. OCN (Operating Company Number) : 6664 Coverage Area Name : JOHNSON CITY Latitude : 36.3027 Longitude : -82.3491 ‹ previous : 423-212 next › : 423-213 Telephone Number List 423-213-0000 ~ 423-213-9999